Improvement in eotaey steam-engines



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NPETERS. PHOT0-LITHOGRAPHER, WASHINGTON, D CA 4@uiten tstrs Aaient @fitta Letters Patent No. 480,630, dated--ug'uat 44, 1868.

IMPROVEMENT lIN ROTARY STEAM-ENGINES.

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TO ALL WHOM IT CONGERN: l A

Be it known that we, NOAH JACKSON andA. W. JACKSON, of Napoleon, in the county of Henry, and in the State of Ohio, have'nv'ented certain new and useful Improvements in Rotary Engines; and do hereby declare that the following is a full, clear, and exact descriptionl thereof, referencebeing had to the 'accompanying drawings, and to the letters of reference marked thereon.

The nature of our.invention consists--. f i v First, in the 'construction of. :trim-wheel, provided with anges on each-side, and with metal partitions put on thel rim 'betweenv these'ilanges,.inj such a manner as to form, in'conjunetion with the outside covering or casing, steam-tight chambers.

Second, in the construction of the outside covering or Aeasing which fits tightlyinside and around the anges of the rim-wheel, to confine the steam thereto, and is' provided with ports for the ingress-and egress of the steam.. l i

Third, in the construction of pivoted 'valves,on the inside'of the casing, opening or closingV the inductive ports, to admit' o r shut oii thesteamfroin the chambers in the rim-wheel. i f

Fourth, in the-manner of packingsaid valves by steam-pressure, so that when closed they will iit tightly in theirjplaces, and prevent steam from entering the chambers. Y

In' order toenable others skilled inthe -art to make aud/use our invention, ,wel will now proceed to describe its construction and operation; referring to the annexed drawings which form a part of this speeiiication, and in whichy Y i Figure 1 is a longitudinal section,

Figure'Z aside viewof the. valve, and

Figure 3 ayertical section. f i

" A. represents .a skeleton-rim wheel, with its spokes C C, and' hub D, and which i's provided with flanges, O O, projecting-one on each side of and around the rim.

On therim, and betweentheiianges of said wheel A, one or more partitions, N'N, are secured, which partitions are square on onefside, and rounded on' on the other,` and the outside edges thereof` so cut oli` or bevelled as to close tightly to the outside covering when the same is put on, thus forming several distinct and separate steam-tight chambers M M, as shown in iig. 1. f

B is the outsideecovering or casing, enclosing the said wheel, the edges of' which casing are grooved in such a manner that they it in between the flanges, andat the same 'time extend around and outside of the edges thereof. The said casing is made vin two parts, which 'are secured together by means of the screws K K passing through the ears I I, ofthe ends of these parts,` andv by the nuts L L', tightening the same; and in the centre of the ;said parts of the casing are steam-chests E E, which .are provided with a collar, G, to put the steampipe into; Y

The entrance voi' the steam'fromthe steam-chests E into the chambers M, is regulated by means of the valvesf E, which are pivoted near their centre, and so arranged that when the steam enters the steam-chest,

it presses the valve op'en, and strikes against the-square end of the partition Nturning`the wheel, and the valve remains open and admitting steam until the rounded side of the next partition strikes the valve, when the sameis'closed, and remainsclosed until the outside edge of this second partition has passed the edge of the valve, whei 1 the steam again presses it down, and is allowed to enter the next chamber, and strike against the square end ofthe said new partition, eontinuing'in this manner vopening and closing, admitting and'shntting o the steam, which is at lastdiseharged through the exhaust-ports H H; the partitions, however, being so arranged that the valves will Ynot be closed at the same time, but when one is closed the other is always open,

sothat there willbe a steady stream of steam turning the wheel.-

For the purpose of closing the 'steam-chests tightly, by means of the valves, these are constructed in the following manner.l i

They consist of two pieces of metal, riveted together, but so arranged as to forina. groove on three sides y between them', in which groove the curved spring a is placed. Two L-shepedpieces of metal, C C, are then placed in thesev'grooves, on the outside of the spring a, and the inner plate' being 'provided with small holes,-

the steam enters inte said, groove `and presses the L-shaped pieces of metal outward against the sides 'of the steam-chest, closing it perfectly. The valves are so pivoted in the steam-chests, that, when closed, they forni al part of the insidevperphery ofthe easingfB.

' Having thus fully described our invention, whalt We claim as new, anddes're to secure by Letters Patent, is-. 1. The curved spring a, in combination with the L-shped metal pieces b b, arranged in the valves F F,

substantially as herein set forth.`

2. The arrangement of the .anges O O, pertitio'ns N N, easing B, valves F F, induction-spouts .G G, and exhailst-pipes H H, snbetentiatlly n herein set for'th. i

In'testimony that we ele-im the foregoing, 'we have hereunto set ont hands, this 23d dayvo'f May, 1868.

` f l NOAH JACKSON,

A. W. JACKSON. Witnesses:

B. E. SHELDON, S. M.l HAGUE. 

